Having exactly the same issues with Xcode Version 12.5.1 (12E507) However, it appears to work as expected with Xcode Version 13.0 beta 5 (13A5212g) Possible workaround could be to update manually xcscheme file as such: <LocationScenarioReference identifier = "{path to .gpx file}" referenceType = "0"> </LocationScenarioReference>

This. Would love to have access to some public developer API for AirTag. This could open a lot of possibilities for developers. Can't wait for Apple developer response. Hopefully we could get something during WWDC 21?

Technically it should be possible to use AirTag as iBeacon as it uses bluetooth underneath. The real question: is Apple going to provide official developer APIs for it.